If it's any help I have just matched an old Wickes kitchen where the doors are slightly longer than similar ones I found in B&Q they have quite a good range and will make to any size they even made a door with a sloping top to fit the understairs ceiling.

Looks like a Symphony (the company name) kitchen (massive company make a lot of kitchens for well known other companies) fitted what feels like a million of those doors in a previous life! Think they called it shaker pear or maple?